John h



(No Model.)

J. H. PENDLETON.

REGULATOR PORREVOLVING SHAFTS. No. 345,394.l

Patented 111115113,l 188'6.

UNITED STATES PATENT OFFICE.

JOHN n. PENDLETON, OE BROOKLYN, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO HIMSELE, CORNELIUS TIERS, ALEXANDER LI. TIERS, ROBERT I. SLOAN, AND LINCOLN MOSS, ALL OE NEW YORK, N. Y., AND THOMAS NAST, OE MORRISTOWN, NEW JERSEY.

m-:c.Ul..L\TOR Foa REvoLvlNe sHAFTs.

SPEIFICATION forming part of Letters Patent No. 345,394, dated July 13, 1886.

Application filed December 16, 1885. Serial No. 185,826. (No model.)

To all whom, it may concern:

Beit known that I, JOHN H. PENDLETON, of Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Regulators for Revolving Shafts, ofwhieh the following is a specification.

Instances frequently arise in machinery where it is desirable to regulate the Speed of 2O valves or cocks that can be controlled by hand.

rlhe piston in this cylinder is connected by rods with a crank upon the shaft that is to be regulated, so that the revolution of the shaft causes the fluid in the cylinder to be expelled from oneend and drawn into the other end through the ports or passages. When these are open, the shaft can be revolved with but little resistance. If the passage-ways are closed, the piston is held immovable by the liquid in the cylinder. When partially open,

the valves obstruct the movement of theliquid` to a greater or less extent, and so regulate the speed of the moving shaft or Shafts.

I make use, by preference, of two cylinders 5 and pistons and connecting rods, and cranks at right angles to each other on two adjacent shafts, so that the two shafts are simultaneously regulated in their movements, and the revolutions of the two shafts are in Opposite directions and at the same speed, and one may be the motor-Shaft and the other the shaft that is revolved. Y

In the drawings, Figure l is a section longitudinally of the cylinders at the line y y of Fig. 2, and an elevation of the connecting-rods and shaft.v Fig. 2 is a cross-section through the cylinders and regulatingcock. Fig. 3 is a sectional elevation at the line x m, Fig. l;

shafts, cranks, and connections, so as to Show the directions of motions.

The cylinders C vare of suitable size and shape. It is preferable to use two cylinders, as shown. The pistons a b are provided with vpiston-rods a b', and these extend to the crossheads a2 b2, and from these the connecting-rods The passageways or ports cf extend from and Fig. 4 isa diagrammatic plan View of the end to end ofthe respective cylinders, and are provided with branches passing into such cylinders, and in each passage-way is avalve or cock of any desired construction for opening or closing such passage-way. yI have shown the cock or plug 7c with two openings corresponding to the passage-ways e f, so that such passage-ways are'opened or closed by turning the Said cock by a handle or lever, l.

It is now to be understood thatthe liquid in the cylinders is churned back and forth from one end of each cylinder to the other by the movements of the pistons, and the Speed ofthe pistons will be controlled by the size of the passage-way, because the pistons cannot move faster than the liquidtis transferred from one end of the cylinder to the other, the cock or.

valve regulating the size of the passage-way.

Oups u u should be provided, into which bubbles of air can escape from time to time, and through which Oil or other liquid can be supplied to compensate waste; and in charging the cylinders and passage-ways the oil may be forced in at the lowest point to allow the air to be entirely displaced.

A single cylinder, piston, connecting-rod, and crank,with a cock or valve in thepassage- Way, may be used to regulate one shaft; but the motions of two shafts can be made very uniform, and the direction of rotation of the two shafts reversed by using the cross-heads, connecting-rods, and. cranks, as shown. The cranks on the respective shafts being at right angles to each other, the movements are equalized, because one crank is aetingfull while the other is passing the dead-center, and the er0ss-heads to which the respective pairs of connecting-rods to the cranks are connected transmit the motion from one shaft to the other, so that either shaft D or E can be the motorshaft, and the other the shaft receiving motion, or both can be motor or moved shafts, and they must both move at the same speed, but always in opposite directions, because the pair of connecting-rods to one cross-head move back and forth together and always are at equal angles to a central plane passing midway between and parallel to the shafts.

Two shafts each having a crank, and one pair of connecting-rods, and one cross-head have been used, the two shafts revolving in opposite directions; but the shafts had to be geared together to insure equality of rotation, and two shafts with three or more cranks have been connected directly by rods between the cranks, but the two shafts revolved in the same direction. My improvements in the connections are available with the shafts revolving in opposite directions.

I claim as my invention- 1. The combination, with a revolving shaft, of a crank, connecting-rod, piston, and cylinder, havinga passage extending from one end of the cylinder to the other, and a Valve in such passage for regulating the transfer of a fluid from one end of the cylinder t0 the other,

and controlling the speed of movement or stopping the shaft, substantially as set forth.

2. The combination, with two shafts, and right-angled cranks on the respective shafts,of connecting-rods in pairs extending from the respective cranks, cross-heads to which the respective pairs of connecti n g-rods are pivoted, and means for guiding such cross-heads, substantially as set forth, for insuring uniformity in the motions of two shafts that are revolving in opposite directions, substantially as specified.

3. The combination, with two shafts, and right-angled cranks on the respective shafts, ofconnecting-rods in pairs extending from the respective cranks, cross-heads to which the respectivepairs of connecting-rods are pivotcd, piston-rods, pistons, and cylinders containing passage ways that conneet the opposite ends of each cylinder, cocks or valves to regulate the openings of the passage-ways and the transfer of a fluid from one end to the other of each cylinder, and thereby control the movements of the shafts or stop the same, substantially as specified.

Signed by me this 12th day of December, A. D. 1885.

J. H. PENDLETGN.

Witnesses:

GEO. T. PINCKNEY, WILLIAM G. MOTT. 

